Graupner/SJ mz-18 HoTT 2.4GHz 9 Channel transmitteris designed with Graupner/SJ's unique telemetry technology that support Bi-directional data transmission gives user the real-time information. The use of up to 75 frequency hopping channels ensures extreme operating reliability and immunity to external interference. mz-18 has 30 model memories and it is suitable for any aircraft, Aditionally, with up to 9 available channels, built-in telemetry with data logging capabilities and 3.5" large TFT LCD with specialized touch pannel, mz-18 is the obvious choice for anyone who needs a high quality 9 channel radio.